*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0d1117;
  --surface: #161b22;
  --border: #30363d;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #58a6ff;
  --green: #3fb950;
  --purple: #bc8cff;
  --orange: #f78166;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  line-height: 1.6;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 48px 24px;
}

/* Hero */
.hero {
  display: flex;
  align-items: center;
  gap: 32px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.avatar {
  width: 120px;
  height: 120px;
  border-radius: 12px;
  border: 2px solid var(--border);
  background: var(--surface);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  image-rendering: pixelated;
}

.hero-text h1 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.handle {
  color: var(--muted);
  font-size: 1.1rem;
  margin-bottom: 12px;
}

.bio {
  color: var(--text);
  font-size: 0.95rem;
  max-width: 480px;
  margin-bottom: 16px;
}

.links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.link-item {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--muted);
  font-size: 0.875rem;
  transition: color 0.2s;
}

.link-item:hover { color: var(--accent); text-decoration: none; }

.link-icon {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

/* Section */
.section {
  margin-bottom: 40px;
}

.section-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

/* Skills */
.skills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.skill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
  transition: border-color 0.2s, color 0.2s;
}

.skill:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.skill-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

/* Stat cards */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  text-align: center;
}

.stat-number {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--accent);
}

.stat-label {
  font-size: 0.75rem;
  color: var(--muted);
  margin-top: 4px;
}

/* Repo cards */
.repos-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}

.repo-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: border-color 0.2s;
}

.repo-card:hover { border-color: var(--accent); }

.repo-name {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--accent);
}

.repo-desc {
  font-size: 0.8rem;
  color: var(--muted);
  flex: 1;
}

.repo-meta {
  display: flex;
  gap: 16px;
  font-size: 0.75rem;
  color: var(--muted);
  align-items: center;
}

.repo-lang {
  display: flex;
  align-items: center;
  gap: 4px;
}

.lang-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

/* Activity graph */
.contrib-graph {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
  overflow-x: auto;
}

.graph-grid {
  display: flex;
  gap: 3px;
}

.graph-col {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.graph-cell {
  width: 11px;
  height: 11px;
  border-radius: 2px;
  background: var(--border);
}

.graph-cell[data-level="1"] { background: #0e4429; }
.graph-cell[data-level="2"] { background: #006d32; }
.graph-cell[data-level="3"] { background: #26a641; }
.graph-cell[data-level="4"] { background: #39d353; }

/* Footer */
footer {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  text-align: center;
  color: var(--muted);
  font-size: 0.8rem;
}

@media (max-width: 600px) {
  .hero { flex-direction: column; text-align: center; }
  .links { justify-content: center; }
}